No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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3',5'-Cyclic-GMP Phosphodiesterases / antagonists & inhibitors*
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Commerce / standards
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Commerce / statistics & numerical data*
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Drug Prescriptions / standards
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Drug Prescriptions / statistics & numerical data*
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Erectile Dysfunction / diagnosis
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Erectile Dysfunction / drug therapy*
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Humans
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Internet / standards
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Internet / statistics & numerical data*
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Male
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Medical History Taking / statistics & numerical data
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Office Visits
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Phosphodiesterase Inhibitors*
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Piperazines*
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Practice Patterns, Physicians' / statistics & numerical data
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Purines
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Sildenafil Citrate
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Sulfones
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Surveys and Questionnaires
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United States
Substances
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Phosphodiesterase Inhibitors
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Piperazines
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Purines
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Sulfones
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Sildenafil Citrate
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3',5'-Cyclic-GMP Phosphodiesterases